<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>对象方法扩展</title>
</head>
<body>
    <script>
        // 1.Object.is 判断两个值是否完全相等
        // console.log(Object.is(120, 120));
        // console.log(Object.is(NaN, NaN));
        // console.log(NaN === NaN);

        // 2.Object.assign 对象的合并
        // const config1 = {
        //     host: `localhost`,
        //     port: 3306,
        //     name: `root`,
        //     pass: `root`,
        //     test1: `test1`
        // }
        // const config2 = {
        //     host: `http://atguigu.com`,
        //     port: 33060,
        //     name: `atguigu`,
        //     pass: `iloveyou`,
        //     test2: `test2`
        // }
        // console.log(Object.assign(config1, config2));

        // 3.Object.setProtoTypeOf 设置原型对象    Object.getProtoTypeOf
        const school = {
            name: `尚硅谷`
        }
        const cities = {
            xiaoxu: [`北京`, `上海`, `深圳`]
        }
        console.log(Object.setPrototypeOf(school, cities));
        console.log(Object.getPrototypeOf(school));

    </script>
</body>
</html>